Filling passwords is usually only offered for fields with a password
input type, which ensures that they are always properly masked. Certain
custom views (e.g., the Termux terminal view), may apply their own
masking that is not based on the standard views.
With this commit, we allow filling passwords into arbitrary fields as
long as they have an Autofill hint that indicates a password.
Tie breakers for Autofill fields should only be evaluated if there is
a need to, in particular not if only a single or no field is matched.
Apart from a potential minor performance improvement, this should not
cause any user-visible changes, but does simplify the log output
considerably.
